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Mathematics, 04.07.2020 14:01 royalkk
A shareholders' group, in lodging a protest, claimed that the mean tenure for a chief executive officer (CEO) was at least nine years. A survey of companies reported in The Wall Street Journal found a sample mean tenure of x = 7.67 years for CEOs with a standard deviation of s = 6.38 years. (a) Choose the correct hypotheses that can be used to challenge the validity of the claim made by the shareholders' group. H0: μ - Select your answer - years Ha: μ - Select your answer - years (b) Assume that 85 companies were included in the sample. What is the p value for your hypothesis test? If required, round your answer to four decimal places. (c) At α = 0.01, what is your conclusion? We - Select your answer - the null hypothesis. We - Select your answer - conclude that the mean tenure for a CEO is shorter than nine years.
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